// SPDX-License-Identifier: GPL-2.0
#include "bcachefs.h"
#include "error.h"
-#include "io.h"
+#include "recovery.h"
#include "super.h"
+#include <linux/thread_with_file.h>
#define FSCK_ERR_RATELIMIT_NR 10
bool bch2_inconsistent_error(struct bch_fs *c)
{
- set_bit(BCH_FS_ERROR, &c->flags);
+ set_bit(BCH_FS_error, &c->flags);
switch (c->opts.errors) {
- case BCH_ON_ERROR_CONTINUE:
+ case BCH_ON_ERROR_continue:
return false;
- case BCH_ON_ERROR_RO:
+ case BCH_ON_ERROR_ro:
if (bch2_fs_emergency_read_only(c))
- bch_err(c, "emergency read only");
+ bch_err(c, "inconsistency detected - emergency read only");
return true;
- case BCH_ON_ERROR_PANIC:
+ case BCH_ON_ERROR_panic:
panic(bch2_fmt(c, "panic after error"));
return true;
default:
}
}
+int bch2_topology_error(struct bch_fs *c)
+{
+ set_bit(BCH_FS_topology_error, &c->flags);
+ if (!test_bit(BCH_FS_fsck_running, &c->flags)) {
+ bch2_inconsistent_error(c);
+ return -BCH_ERR_btree_need_topology_repair;
+ } else {
+ return bch2_run_explicit_recovery_pass(c, BCH_RECOVERY_PASS_check_topology) ?:
+ -BCH_ERR_btree_node_read_validate_error;
+ }
+}
+
void bch2_fatal_error(struct bch_fs *c)
{
if (bch2_fs_emergency_read_only(c))
- bch_err(c, "emergency read only");
+ bch_err(c, "fatal error - emergency read only");
}
void bch2_io_error_work(struct work_struct *work)
struct bch_fs *c = ca->fs;
bool dev;
- mutex_lock(&c->state_lock);
- dev = bch2_dev_state_allowed(c, ca, BCH_MEMBER_STATE_RO,
+ down_write(&c->state_lock);
+ dev = bch2_dev_state_allowed(c, ca, BCH_MEMBER_STATE_ro,
BCH_FORCE_IF_DEGRADED);
if (dev
- ? __bch2_dev_set_state(c, ca, BCH_MEMBER_STATE_RO,
+ ? __bch2_dev_set_state(c, ca, BCH_MEMBER_STATE_ro,
BCH_FORCE_IF_DEGRADED)
: bch2_fs_emergency_read_only(c))
bch_err(ca,
"too many IO errors, setting %s RO",
dev ? "device" : "filesystem");
- mutex_unlock(&c->state_lock);
+ up_write(&c->state_lock);
}
-void bch2_io_error(struct bch_dev *ca)
+void bch2_io_error(struct bch_dev *ca, enum bch_member_error_type type)
{
+ atomic64_inc(&ca->errors[type]);
//queue_work(system_long_wq, &ca->io_error_work);
}
+enum ask_yn {
+ YN_NO,
+ YN_YES,
+ YN_ALLNO,
+ YN_ALLYES,
+};
+
+static enum ask_yn parse_yn_response(char *buf)
+{
+ buf = strim(buf);
+
+ if (strlen(buf) == 1)
+ switch (buf[0]) {
+ case 'n':
+ return YN_NO;
+ case 'y':
+ return YN_YES;
+ case 'N':
+ return YN_ALLNO;
+ case 'Y':
+ return YN_ALLYES;
+ }
+ return -1;
+}
+
#ifdef __KERNEL__
-#define ask_yn() false
+static enum ask_yn bch2_fsck_ask_yn(struct bch_fs *c)
+{
+ struct stdio_redirect *stdio = c->stdio;
+
+ if (c->stdio_filter && c->stdio_filter != current)
+ stdio = NULL;
+
+ if (!stdio)
+ return YN_NO;
+
+ char buf[100];
+ int ret;
+
+ do {
+ bch2_print(c, " (y,n, or Y,N for all errors of this type) ");
+
+ int r = stdio_redirect_readline(stdio, buf, sizeof(buf) - 1);
+ if (r < 0)
+ return YN_NO;
+ buf[r] = '\0';
+ } while ((ret = parse_yn_response(buf)) < 0);
+
+ return ret;
+}
#else
+
#include "tools-util.h"
-#endif
-enum fsck_err_ret bch2_fsck_err(struct bch_fs *c, unsigned flags,
- const char *fmt, ...)
+static enum ask_yn bch2_fsck_ask_yn(struct bch_fs *c)
{
- struct fsck_err_state *s;
- va_list args;
- bool fix = false, print = true, suppressing = false;
- char _buf[sizeof(s->buf)], *buf = _buf;
+ char *buf = NULL;
+ size_t buflen = 0;
+ int ret;
- if (test_bit(BCH_FS_FSCK_DONE, &c->flags)) {
- va_start(args, fmt);
- vprintk(fmt, args);
- va_end(args);
+ do {
+ fputs(" (y,n, or Y,N for all errors of this type) ", stdout);
+ fflush(stdout);
- return bch2_inconsistent_error(c)
- ? FSCK_ERR_EXIT
- : FSCK_ERR_FIX;
- }
+ if (getline(&buf, &buflen, stdin) < 0)
+ die("error reading from standard input");
+ } while ((ret = parse_yn_response(buf)) < 0);
+
+ free(buf);
+ return ret;
+}
+
+#endif
+
+static struct fsck_err_state *fsck_err_get(struct bch_fs *c, const char *fmt)
+{
+ struct fsck_err_state *s;
- mutex_lock(&c->fsck_error_lock);
+ if (!test_bit(BCH_FS_fsck_running, &c->flags))
+ return NULL;
- list_for_each_entry(s, &c->fsck_errors, list)
- if (s->fmt == fmt)
- goto found;
+ list_for_each_entry(s, &c->fsck_error_msgs, list)
+ if (s->fmt == fmt) {
+ /*
+ * move it to the head of the list: repeated fsck errors
+ * are common
+ */
+ list_move(&s->list, &c->fsck_error_msgs);
+ return s;
+ }
- s = kzalloc(sizeof(*s), GFP_KERNEL);
+ s = kzalloc(sizeof(*s), GFP_NOFS);
if (!s) {
- if (!c->fsck_alloc_err)
+ if (!c->fsck_alloc_msgs_err)
bch_err(c, "kmalloc err, cannot ratelimit fsck errs");
- c->fsck_alloc_err = true;
- buf = _buf;
- goto print;
+ c->fsck_alloc_msgs_err = true;
+ return NULL;
}
INIT_LIST_HEAD(&s->list);
s->fmt = fmt;
-found:
- list_move(&s->list, &c->fsck_errors);
- s->nr++;
- suppressing = s->nr == FSCK_ERR_RATELIMIT_NR;
- print = s->nr <= FSCK_ERR_RATELIMIT_NR;
- buf = s->buf;
-print:
+ list_add(&s->list, &c->fsck_error_msgs);
+ return s;
+}
+
+int bch2_fsck_err(struct bch_fs *c,
+ enum bch_fsck_flags flags,
+ enum bch_sb_error_id err,
+ const char *fmt, ...)
+{
+ struct fsck_err_state *s = NULL;
+ va_list args;
+ bool print = true, suppressing = false, inconsistent = false;
+ struct printbuf buf = PRINTBUF, *out = &buf;
+ int ret = -BCH_ERR_fsck_ignore;
+
+ if ((flags & FSCK_CAN_FIX) &&
+ test_bit(err, c->sb.errors_silent))
+ return -BCH_ERR_fsck_fix;
+
+ bch2_sb_error_count(c, err);
+
va_start(args, fmt);
- vscnprintf(buf, sizeof(_buf), fmt, args);
+ prt_vprintf(out, fmt, args);
va_end(args);
- if (c->opts.fix_errors == FSCK_OPT_EXIT) {
- bch_err(c, "%s, exiting", buf);
+ mutex_lock(&c->fsck_error_msgs_lock);
+ s = fsck_err_get(c, fmt);
+ if (s) {
+ /*
+ * We may be called multiple times for the same error on
+ * transaction restart - this memoizes instead of asking the user
+ * multiple times for the same error:
+ */
+ if (s->last_msg && !strcmp(buf.buf, s->last_msg)) {
+ ret = s->ret;
+ mutex_unlock(&c->fsck_error_msgs_lock);
+ printbuf_exit(&buf);
+ return ret;
+ }
+
+ kfree(s->last_msg);
+ s->last_msg = kstrdup(buf.buf, GFP_KERNEL);
+
+ if (c->opts.ratelimit_errors &&
+ !(flags & FSCK_NO_RATELIMIT) &&
+ s->nr >= FSCK_ERR_RATELIMIT_NR) {
+ if (s->nr == FSCK_ERR_RATELIMIT_NR)
+ suppressing = true;
+ else
+ print = false;
+ }
+
+ s->nr++;
+ }
+
+#ifdef BCACHEFS_LOG_PREFIX
+ if (!strncmp(fmt, "bcachefs:", 9))
+ prt_printf(out, bch2_log_msg(c, ""));
+#endif
+
+ if (!test_bit(BCH_FS_fsck_running, &c->flags)) {
+ if (c->opts.errors != BCH_ON_ERROR_continue ||
+ !(flags & (FSCK_CAN_FIX|FSCK_CAN_IGNORE))) {
+ prt_str(out, ", shutting down");
+ inconsistent = true;
+ ret = -BCH_ERR_fsck_errors_not_fixed;
+ } else if (flags & FSCK_CAN_FIX) {
+ prt_str(out, ", fixing");
+ ret = -BCH_ERR_fsck_fix;
+ } else {
+ prt_str(out, ", continuing");
+ ret = -BCH_ERR_fsck_ignore;
+ }
+ } else if (c->opts.fix_errors == FSCK_FIX_exit) {
+ prt_str(out, ", exiting");
+ ret = -BCH_ERR_fsck_errors_not_fixed;
} else if (flags & FSCK_CAN_FIX) {
- if (c->opts.fix_errors == FSCK_OPT_ASK) {
- printk(KERN_ERR "%s: fix?", buf);
- fix = ask_yn();
- } else if (c->opts.fix_errors == FSCK_OPT_YES ||
+ int fix = s && s->fix
+ ? s->fix
+ : c->opts.fix_errors;
+
+ if (fix == FSCK_FIX_ask) {
+ int ask;
+
+ prt_str(out, ": fix?");
+ if (bch2_fs_stdio_redirect(c))
+ bch2_print(c, "%s", out->buf);
+ else
+ bch2_print_string_as_lines(KERN_ERR, out->buf);
+ print = false;
+
+ ask = bch2_fsck_ask_yn(c);
+
+ if (ask >= YN_ALLNO && s)
+ s->fix = ask == YN_ALLNO
+ ? FSCK_FIX_no
+ : FSCK_FIX_yes;
+
+ ret = ask & 1
+ ? -BCH_ERR_fsck_fix
+ : -BCH_ERR_fsck_ignore;
+ } else if (fix == FSCK_FIX_yes ||
(c->opts.nochanges &&
!(flags & FSCK_CAN_IGNORE))) {
- if (print)
- bch_err(c, "%s, fixing", buf);
- fix = true;
+ prt_str(out, ", fixing");
+ ret = -BCH_ERR_fsck_fix;
} else {
- if (print)
- bch_err(c, "%s, not fixing", buf);
- fix = false;
+ prt_str(out, ", not fixing");
}
} else if (flags & FSCK_NEED_FSCK) {
- if (print)
- bch_err(c, "%s (run fsck to correct)", buf);
+ prt_str(out, " (run fsck to correct)");
} else {
- if (print)
- bch_err(c, "%s (repair unimplemented)", buf);
+ prt_str(out, " (repair unimplemented)");
}
- if (suppressing)
+ if (ret == -BCH_ERR_fsck_ignore &&
+ (c->opts.fix_errors == FSCK_FIX_exit ||
+ !(flags & FSCK_CAN_IGNORE)))
+ ret = -BCH_ERR_fsck_errors_not_fixed;
+
+ if (print) {
+ if (bch2_fs_stdio_redirect(c))
+ bch2_print(c, "%s\n", out->buf);
+ else
+ bch2_print_string_as_lines(KERN_ERR, out->buf);
+ }
+
+ if (test_bit(BCH_FS_fsck_running, &c->flags) &&
+ (ret != -BCH_ERR_fsck_fix &&
+ ret != -BCH_ERR_fsck_ignore))
+ bch_err(c, "Unable to continue, halting");
+ else if (suppressing)
bch_err(c, "Ratelimiting new instances of previous error");
- mutex_unlock(&c->fsck_error_lock);
+ if (s)
+ s->ret = ret;
+
+ mutex_unlock(&c->fsck_error_msgs_lock);
- if (fix) {
- set_bit(BCH_FS_ERRORS_FIXED, &c->flags);
- return FSCK_ERR_FIX;
+ printbuf_exit(&buf);
+
+ if (inconsistent)
+ bch2_inconsistent_error(c);
+
+ if (ret == -BCH_ERR_fsck_fix) {
+ set_bit(BCH_FS_errors_fixed, &c->flags);
} else {
- set_bit(BCH_FS_ERROR, &c->flags);
- return c->opts.fix_errors == FSCK_OPT_EXIT ||
- !(flags & FSCK_CAN_IGNORE)
- ? FSCK_ERR_EXIT
- : FSCK_ERR_IGNORE;
+ set_bit(BCH_FS_errors_not_fixed, &c->flags);
+ set_bit(BCH_FS_error, &c->flags);
}
+
+ return ret;
}
void bch2_flush_fsck_errs(struct bch_fs *c)
{
struct fsck_err_state *s, *n;
- mutex_lock(&c->fsck_error_lock);
+ mutex_lock(&c->fsck_error_msgs_lock);
- list_for_each_entry_safe(s, n, &c->fsck_errors, list) {
- if (s->nr > FSCK_ERR_RATELIMIT_NR)
- bch_err(c, "Saw %llu errors like:\n %s", s->nr, s->buf);
+ list_for_each_entry_safe(s, n, &c->fsck_error_msgs, list) {
+ if (s->ratelimited && s->last_msg)
+ bch_err(c, "Saw %llu errors like:\n %s", s->nr, s->last_msg);
list_del(&s->list);
+ kfree(s->last_msg);
kfree(s);
}
- mutex_unlock(&c->fsck_error_lock);
+ mutex_unlock(&c->fsck_error_msgs_lock);
}
projects / bcachefs-tools-debian / blobdiff